mirror/emacs
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/emacs.git synced 2024-12-30 11:09:23 +00:00
Code Issues Releases Activity
0bce5d9eb8
emacs/lisp/cus-theme.el
Paul Eggert ab422c4d68 Update copyright notices for 2013.
2013-01-01 09:11:05 +00:00

720 lines
25 KiB
EmacsLisp
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; cus-theme.el -- custom theme creation user interface
;;
;; Copyright (C) 2001-2013 Free Software Foundation, Inc.
;;
;; Author: Alex Schroeder <alex@gnu.org>
;; Maintainer: FSF
;; Keywords: help, faces
;; Package: emacs
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(require 'widget)
(require 'cus-edit)
(eval-when-compile
(require 'wid-edit))
(defvar custom-new-theme-mode-map
(let ((map (make-keymap)))
(set-keymap-parent map widget-keymap)
(suppress-keymap map)
(define-key map "\C-x\C-s" 'custom-theme-write)
(define-key map "n" 'widget-forward)
(define-key map "p" 'widget-backward)
map)
"Keymap for `custom-new-theme-mode'.")
(define-derived-mode custom-new-theme-mode nil "Custom-Theme"
"Major mode for editing Custom themes.
Do not call this mode function yourself. It is meant for internal use."
(use-local-map custom-new-theme-mode-map)
(custom--initialize-widget-variables)
(set (make-local-variable 'revert-buffer-function) 'custom-theme-revert))
(put 'custom-new-theme-mode 'mode-class 'special)
(defvar custom-theme-name nil)
;; Each element has the form (VAR CHECKBOX-WIDGET VAR-WIDGET)
(defvar custom-theme-variables nil)
;; Each element has the form (FACE CHECKBOX-WIDGET FACE-WIDGET)
(defvar custom-theme-faces nil)
(defvar custom-theme-description nil)
(defvar custom-theme--migrate-settings nil)
(defvar custom-theme-insert-variable-marker nil)
(defvar custom-theme-insert-face-marker nil)
(defvar custom-theme--listed-faces '(default cursor fixed-pitch
variable-pitch escape-glyph minibuffer-prompt highlight region
shadow secondary-selection trailing-whitespace
font-lock-builtin-face font-lock-comment-delimiter-face
font-lock-comment-face font-lock-constant-face
font-lock-doc-face font-lock-function-name-face
font-lock-keyword-face font-lock-negation-char-face
font-lock-preprocessor-face font-lock-regexp-grouping-backslash
font-lock-regexp-grouping-construct font-lock-string-face
font-lock-type-face font-lock-variable-name-face
font-lock-warning-face button link link-visited fringe
header-line tooltip mode-line mode-line-buffer-id
mode-line-emphasis mode-line-highlight mode-line-inactive
isearch isearch-fail lazy-highlight match next-error
query-replace)
"Faces listed by default in the *Custom Theme* buffer.")
(defvar custom-theme--save-name)
;;;###autoload
(defun customize-create-theme (&optional theme buffer)
"Create or edit a custom theme.
THEME, if non-nil, should be an existing theme to edit. If THEME
is `user', the resulting *Custom Theme* buffer also contains a
checkbox for removing the theme settings specified in the buffer
from the Custom save file.
BUFFER, if non-nil, should be a buffer to use; the default is
named *Custom Theme*."
(interactive)
(switch-to-buffer (get-buffer-create (or buffer "*Custom Theme*")))
(let ((inhibit-read-only t))
(erase-buffer)
(dolist (ov (overlays-in (point-min) (point-max)))
(delete-overlay ov)))
(custom-new-theme-mode)
(make-local-variable 'custom-theme-name)
(set (make-local-variable 'custom-theme--save-name) theme)
(set (make-local-variable 'custom-theme-faces) nil)
(set (make-local-variable 'custom-theme-variables) nil)
(set (make-local-variable 'custom-theme-description) "")
(set (make-local-variable 'custom-theme--migrate-settings) nil)
(make-local-variable 'custom-theme-insert-face-marker)
(make-local-variable 'custom-theme-insert-variable-marker)
(make-local-variable 'custom-theme--listed-faces)
(when (called-interactively-p 'interactive)
(unless (y-or-n-p "Include basic face customizations in this theme? ")
(setq custom-theme--listed-faces nil)))
(if (eq theme 'user)
(widget-insert "This buffer contains all the Custom settings you have made.
You can convert them into a new custom theme, and optionally
remove them from your saved Custom file.\n\n"))
(widget-create 'push-button
:tag " Visit Theme "
:help-echo "Insert the settings of a pre-defined theme."
:action (lambda (_widget &optional _event)
(call-interactively 'custom-theme-visit-theme)))
(widget-insert " ")
(widget-create 'push-button
:tag " Merge Theme "
:help-echo "Merge in the settings of a pre-defined theme."
:action (lambda (_widget &optional _event)
(call-interactively 'custom-theme-merge-theme)))
(widget-insert " ")
(widget-create 'push-button
:tag " Revert "
:help-echo "Revert this buffer to its original state."
:action (lambda (&rest ignored) (revert-buffer)))
(widget-insert "\n\nTheme name : ")
(setq custom-theme-name
(widget-create 'editable-field
:value (if (and theme (not (eq theme 'user)))
(symbol-name theme)
"")))
(widget-insert "Description: ")
(setq custom-theme-description
(widget-create 'text
:value (format-time-string "Created %Y-%m-%d.")))
(widget-create 'push-button
:notify (function custom-theme-write)
" Save Theme ")
(when (eq theme 'user)
(setq custom-theme--migrate-settings t)
(widget-insert " ")
(widget-create 'checkbox
:value custom-theme--migrate-settings
:action (lambda (widget &optional event)
(when (widget-value widget)
(widget-toggle-action widget event)
(setq custom-theme--migrate-settings
(widget-value widget)))))
(widget-insert (propertize " Remove saved theme settings from Custom save file."
'face '(variable-pitch (:height 0.9)))))
(let (vars values faces face-specs)
;; Load the theme settings.
(when theme
(unless (eq theme 'user)
(load-theme theme nil t))
(dolist (setting (get theme 'theme-settings))
(if (eq (car setting) 'theme-value)
(progn (push (nth 1 setting) vars)
(push (nth 3 setting) values))
(push (nth 1 setting) faces)
(push (nth 3 setting) face-specs))))
;; If THEME is non-nil, insert all of that theme's faces.
;; Otherwise, insert those in `custom-theme--listed-faces'.
(widget-insert "\n\n Theme faces:\n ")
(if theme
(while faces
(custom-theme-add-face-1 (pop faces) (pop face-specs)))
(dolist (face custom-theme--listed-faces)
(custom-theme-add-face-1 face nil)))
(setq custom-theme-insert-face-marker (point-marker))
(widget-insert " ")
(widget-create 'push-button
:tag "Insert Additional Face"
:help-echo "Add another face to this theme."
:follow-link 'mouse-face
:button-face 'custom-link
:mouse-face 'highlight
:pressed-face 'highlight
:action (lambda (_widget &optional _event)
(call-interactively 'custom-theme-add-face)))
;; If THEME is non-nil, insert all of that theme's variables.
(widget-insert "\n\n Theme variables:\n ")
(if theme
(while vars
(if (eq (car vars) 'custom-enabled-themes)
(progn (pop vars) (pop values))
(custom-theme-add-var-1 (pop vars) (eval (pop values))))))
(setq custom-theme-insert-variable-marker (point-marker))
(widget-insert " ")
(widget-create 'push-button
:tag "Insert Variable"
:help-echo "Add another variable to this theme."
:follow-link 'mouse-face
:button-face 'custom-link
:mouse-face 'highlight
:pressed-face 'highlight
:action (lambda (_widget &optional _event)
(call-interactively 'custom-theme-add-variable)))
(widget-insert ?\n)
(widget-setup)
(goto-char (point-min))
(message "")))
(defun custom-theme-revert (_ignore-auto noconfirm)
"Revert the current *Custom Theme* buffer.
This is the `revert-buffer-function' for `custom-new-theme-mode'."
(when (or noconfirm (y-or-n-p "Discard current changes? "))
(customize-create-theme custom-theme--save-name (current-buffer))))
;;; Theme variables
(defun custom-theme-add-variable (var value)
"Add a widget for VAR (a symbol) to the *New Custom Theme* buffer.
VALUE should be a value to which to set the widget; when called
interactively, this defaults to the current value of VAR."
(interactive
(let ((v (read-variable "Variable name: ")))
(list v (symbol-value v))))
(let ((entry (assq var custom-theme-variables)))
(cond ((null entry)
;; If VAR is not yet in the buffer, add it.
(save-excursion
(goto-char custom-theme-insert-variable-marker)
(custom-theme-add-var-1 var value)
(move-marker custom-theme-insert-variable-marker (point))
(widget-setup)))
;; Otherwise, alter that var widget.
(t
(widget-value-set (nth 1 entry) t)
(let ((widget (nth 2 entry)))
(widget-put widget :shown-value (list value))
(custom-redraw widget))))))
(defun custom-theme-add-var-1 (symbol val)
(widget-insert " ")
(push (list symbol
(prog1 (widget-create 'checkbox
:value t
:help-echo "Enable/disable this variable.")
(widget-insert " "))
(widget-create 'custom-variable
:tag (custom-unlispify-tag-name symbol)
:value symbol
:shown-value (list val)
:notify 'ignore
:custom-level 0
:custom-state 'hidden
:custom-style 'simple))
custom-theme-variables)
(widget-insert " "))
;;; Theme faces
(defun custom-theme-add-face (face &optional spec)
"Add a widget for FACE (a symbol) to the *New Custom Theme* buffer.
SPEC, if non-nil, should be a face spec to which to set the widget."
(interactive (list (read-face-name "Face name" nil nil) nil))
(unless (or (facep face) spec)
(error "`%s' has no face definition" face))
(let ((entry (assq face custom-theme-faces)))
(cond ((null entry)
;; If FACE is not yet in the buffer, add it.
(save-excursion
(goto-char custom-theme-insert-face-marker)
(custom-theme-add-face-1 face spec)
(move-marker custom-theme-insert-face-marker (point))
(widget-setup)))
;; Otherwise, if SPEC is supplied, alter that face widget.
(spec
(widget-value-set (nth 1 entry) t)
(let ((widget (nth 2 entry)))
(widget-put widget :shown-value spec)
(custom-redraw widget)))
((called-interactively-p 'interactive)
(error "`%s' is already present" face)))))
(defun custom-theme-add-face-1 (symbol spec)
(widget-insert " ")
(push (list symbol
(prog1
(widget-create 'checkbox
:value t
:help-echo "Enable/disable this face.")
(widget-insert " "))
(widget-create 'custom-face
:tag (custom-unlispify-tag-name symbol)
:documentation-shown t
:value symbol
:custom-state 'hidden
:custom-style 'simple
:shown-value spec
:sample-indent 34))
custom-theme-faces)
(widget-insert " "))
;;; Reading and writing
;;;###autoload
(defun custom-theme-visit-theme (theme)
"Set up a Custom buffer to edit custom theme THEME."
(interactive
(list
(intern (completing-read "Find custom theme: "
(mapcar 'symbol-name
(custom-available-themes))))))
(unless (custom-theme-name-valid-p theme)
(error "No valid theme named `%s'" theme))
(cond ((not (eq major-mode 'custom-new-theme-mode))
(customize-create-theme theme))
((y-or-n-p "Discard current changes? ")
(setq custom-theme--save-name theme)
(custom-theme-revert nil t))))
(defun custom-theme-merge-theme (theme)
"Merge the custom theme THEME's settings into the current buffer."
(interactive
(list
(intern (completing-read "Merge custom theme: "
(mapcar 'symbol-name
(custom-available-themes))))))
(unless (eq theme 'user)
(unless (custom-theme-name-valid-p theme)
(error "Invalid theme name `%s'" theme))
(load-theme theme nil t))
(let ((settings (reverse (get theme 'theme-settings))))
(dolist (setting settings)
(let ((option (eq (car setting) 'theme-value))
(name (nth 1 setting))
(value (nth 3 setting)))
(unless (and option
(memq name '(custom-enabled-themes
custom-safe-themes)))
(funcall (if option
'custom-theme-add-variable
'custom-theme-add-face)
name value)))))
theme)
;; From cus-edit.el
(defvar custom-reset-standard-faces-list)
(defvar custom-reset-standard-variables-list)
(defun custom-theme-write (&rest _ignore)
"Write the current custom theme to its theme file."
(interactive)
(let* ((name (widget-value custom-theme-name))
(doc (widget-value custom-theme-description))
(vars custom-theme-variables)
(faces custom-theme-faces)
filename)
(when (string-equal name "")
(setq name (read-from-minibuffer "Theme name: " (user-login-name)))
(widget-value-set custom-theme-name name))
(unless (custom-theme-name-valid-p (intern name))
(error "Custom themes cannot be named `%s'" name))
(setq filename (expand-file-name (concat name "-theme.el")
custom-theme-directory))
(and (file-exists-p filename)
(not (y-or-n-p (format "File %s exists. Overwrite? " filename)))
(error "Aborted"))
(with-temp-buffer
(emacs-lisp-mode)
(unless (file-directory-p custom-theme-directory)
(make-directory (file-name-as-directory custom-theme-directory) t))
(setq buffer-file-name filename)
(erase-buffer)
(insert "(deftheme " name)
(if doc (insert "\n \"" doc "\""))
(insert ")\n")
(custom-theme-write-variables name (reverse vars))
(custom-theme-write-faces name (reverse faces))
(insert "\n(provide-theme '" name ")\n")
(save-buffer))
(message "Theme written to %s" filename)
(when custom-theme--migrate-settings
;; Remove these settings from the Custom file.
(let ((custom-reset-standard-variables-list '(t))
(custom-reset-standard-faces-list '(t)))
(dolist (var vars)
(when (and (not (eq (car var) 'custom-enabled-themes))
(widget-get (nth 1 var) :value))
(widget-apply (nth 2 var) :custom-mark-to-reset-standard)))
(dolist (face faces)
(when (widget-get (nth 1 face) :value)
(widget-apply (nth 2 face) :custom-mark-to-reset-standard)))
(custom-save-all))
(let ((custom-theme-load-path (list 'custom-theme-directory)))
(load-theme (intern name))))))
(defun custom-theme-write-variables (theme vars)
"Write a `custom-theme-set-variables' command for THEME.
It includes all variables in list VARS."
(when vars
(let ((standard-output (current-buffer)))
(princ "\n(custom-theme-set-variables\n")
(princ " '")
(princ theme)
(princ "\n")
(dolist (spec vars)
(when (widget-get (nth 1 spec) :value)
(let* ((symbol (nth 0 spec))
(widget (nth 2 spec))
(child (car-safe (widget-get widget :children)))
(value (if child
(widget-value child)
;; Child is null if the widget is closed (hidden).
(car (widget-get widget :shown-value)))))
(when (boundp symbol)
(unless (bolp)
(princ "\n"))
(princ " '(")
(prin1 symbol)
(princ " ")
(prin1 (custom-quote value))
(princ ")")))))
(if (bolp)
(princ " "))
(princ ")")
(unless (looking-at "\n")
(princ "\n")))))
(defun custom-theme-write-faces (theme faces)
"Write a `custom-theme-set-faces' command for THEME.
It includes all faces in list FACES."
(when faces
(let ((standard-output (current-buffer)))
(princ "\n(custom-theme-set-faces\n")
(princ " '")
(princ theme)
(princ "\n")
(dolist (spec faces)
;; Insert the face iff the checkbox widget is checked.
(when (widget-get (nth 1 spec) :value)
(let* ((symbol (nth 0 spec))
(widget (nth 2 spec))
(value
(cond
((car-safe (widget-get widget :children))
(custom-face-widget-to-spec widget))
;; Child is null if the widget is closed (hidden).
((widget-get widget :shown-value))
(t (custom-face-get-current-spec symbol)))))
(when (and (facep symbol) value)
(princ (if (bolp) " '(" "\n '("))
(prin1 symbol)
(princ " ")
(prin1 value)
(princ ")")))))
(if (bolp) (princ " "))
(princ ")")
(unless (looking-at "\n")
(princ "\n")))))
;;; Describing Custom themes.
;;;###autoload
(defun describe-theme (theme)
"Display a description of the Custom theme THEME (a symbol)."
(interactive
(list
(intern (completing-read "Describe custom theme: "
(mapcar 'symbol-name
(custom-available-themes))))))
(unless (custom-theme-name-valid-p theme)
(error "Invalid theme name `%s'" theme))
(help-setup-xref (list 'describe-theme theme)
(called-interactively-p 'interactive))
(with-help-window (help-buffer)
(with-current-buffer standard-output
(describe-theme-1 theme))))
(defun describe-theme-1 (theme)
(prin1 theme)
(princ " is a custom theme")
(let ((fn (locate-file (concat (symbol-name theme) "-theme.el")
(custom-theme--load-path)
'("" "c")))
doc)
(when fn
(princ " in `")
(help-insert-xref-button (file-name-nondirectory fn)
'help-theme-def fn)
(princ "'"))
(princ ".\n")
(if (custom-theme-p theme)
(progn
(if (custom-theme-enabled-p theme)
(princ "It is loaded and enabled.")
(princ "It is loaded but disabled."))
(setq doc (get theme 'theme-documentation)))
(princ "It is not loaded.")
;; Attempt to grab the theme documentation
(when fn
(with-temp-buffer
(insert-file-contents fn)
(let ((sexp (let ((read-circle nil))
(condition-case nil
(read (current-buffer))
(end-of-file nil)))))
(and sexp (listp sexp)
(eq (car sexp) 'deftheme)
(setq doc (nth 2 sexp)))))))
(princ "\n\nDocumentation:\n")
(princ (if (stringp doc)
doc
"No documentation available.")))
(princ "\n\nYou can ")
(help-insert-xref-button "customize" 'help-theme-edit theme)
(princ " this theme."))
;;; Theme chooser
(defvar custom--listed-themes)
(defcustom custom-theme-allow-multiple-selections nil
"Whether to allow multi-selections in the *Custom Themes* buffer."
:version "24.1"
:type 'boolean
:group 'custom-buffer)
(defvar custom-theme-choose-mode-map
(let ((map (make-keymap)))
(set-keymap-parent map (make-composed-keymap widget-keymap
special-mode-map))
(suppress-keymap map)
(define-key map "\C-x\C-s" 'custom-theme-save)
(define-key map "n" 'widget-forward)
(define-key map "p" 'widget-backward)
(define-key map "?" 'custom-describe-theme)
map)
"Keymap for `custom-theme-choose-mode'.")
(define-derived-mode custom-theme-choose-mode special-mode "Themes"
"Major mode for selecting Custom themes.
Do not call this mode function yourself. It is meant for internal use."
(use-local-map custom-theme-choose-mode-map)
(custom--initialize-widget-variables)
(set (make-local-variable 'revert-buffer-function)
(lambda (_ignore-auto noconfirm)
(when (or noconfirm (y-or-n-p "Discard current choices? "))
(customize-themes (current-buffer))))))
(put 'custom-theme-choose-mode 'mode-class 'special)
;;;###autoload
(defun customize-themes (&optional buffer)
"Display a selectable list of Custom themes.
When called from Lisp, BUFFER should be the buffer to use; if
omitted, a buffer named *Custom Themes* is used."
(interactive)
(switch-to-buffer (get-buffer-create (or buffer "*Custom Themes*")))
(let ((inhibit-read-only t))
(erase-buffer))
(custom-theme-choose-mode)
(set (make-local-variable 'custom--listed-themes) nil)
(make-local-variable 'custom-theme-allow-multiple-selections)
(and (null custom-theme-allow-multiple-selections)
(> (length custom-enabled-themes) 1)
(setq custom-theme-allow-multiple-selections t))
(widget-insert
(substitute-command-keys
"Type RET or click to enable/disable listed custom themes.
Type \\[custom-describe-theme] to describe the theme at point.
Theme files are named *-theme.el in `"))
(widget-create 'link :value "custom-theme-load-path"
:button-face 'custom-link
:mouse-face 'highlight
:pressed-face 'highlight
:help-echo "Describe `custom-theme-load-path'."
:keymap custom-mode-link-map
:follow-link 'mouse-face
:action (lambda (_widget &rest _ignore)
(describe-variable 'custom-theme-load-path)))
(widget-insert "'.\n\n")
;; If the user has made customizations, display a warning and
;; provide buttons to disable or convert them.
(let ((user-settings (get 'user 'theme-settings)))
(unless (or (null user-settings)
(and (null (cdr user-settings))
(eq (caar user-settings) 'theme-value)
(eq (cadr (car user-settings)) 'custom-enabled-themes)))
(widget-insert
(propertize
" Note: Your custom settings take precedence over theme settings.
To migrate your settings into a theme, click "
'face 'font-lock-warning-face))
(widget-create 'link :value "here"
:button-face 'custom-link
:mouse-face 'highlight
:pressed-face 'highlight
:help-echo "Migrate."
:keymap custom-mode-link-map
:follow-link 'mouse-face
:action (lambda (_widget &rest _ignore)
(customize-create-theme 'user)))
(widget-insert ".\n\n")))
(widget-create 'push-button
:tag " Save Theme Settings "
:help-echo "Save the selected themes for future sessions."
:action 'custom-theme-save)
(widget-insert ?\n)
(widget-create 'checkbox
:value custom-theme-allow-multiple-selections
:action 'custom-theme-selections-toggle)
(widget-insert (propertize " Select more than one theme at a time"
'face '(variable-pitch (:height 0.9))))
(widget-insert "\n\nAvailable Custom Themes:\n")
(let ((help-echo "mouse-2: Enable this theme for this session")
widget)
(dolist (theme (custom-available-themes))
(setq widget (widget-create 'checkbox
:value (custom-theme-enabled-p theme)
:theme-name theme
:help-echo help-echo
:action 'custom-theme-checkbox-toggle))
(push (cons theme widget) custom--listed-themes)
(widget-create-child-and-convert widget 'push-button
:button-face-get 'ignore
:mouse-face-get 'ignore
:value (format " %s" theme)
:action 'widget-parent-action
:help-echo help-echo)
(widget-insert " -- "
(propertize (custom-theme-summary theme)
'face 'shadow)
?\n)))
(goto-char (point-min))
(widget-setup))
(defun custom-theme-summary (theme)
"Return the summary line of THEME."
(let (doc)
(if (custom-theme-p theme)
(setq doc (get theme 'theme-documentation))
(let ((fn (locate-file (concat (symbol-name theme) "-theme.el")
(custom-theme--load-path)
'("" "c"))))
(when fn
(with-temp-buffer
(insert-file-contents fn)
(let ((sexp (let ((read-circle nil))
(condition-case nil
(read (current-buffer))
(end-of-file nil)))))
(and sexp (listp sexp)
(eq (car sexp) 'deftheme)
(setq doc (nth 2 sexp))))))))
(cond ((null doc)
"(no documentation available)")
((string-match ".*" doc)
(match-string 0 doc))
(t doc))))
(defun custom-theme-checkbox-toggle (widget &optional event)
(let ((this-theme (widget-get widget :theme-name)))
(if (widget-value widget)
;; Disable the theme.
(progn
(disable-theme this-theme)
(widget-toggle-action widget event))
;; Enable the theme.
(unless custom-theme-allow-multiple-selections
;; If only one theme is allowed, disable all other themes and
;; uncheck their boxes.
(dolist (theme custom-enabled-themes)
(and (not (eq theme this-theme))
(assq theme custom--listed-themes)
(disable-theme theme)))
(dolist (theme custom--listed-themes)
(unless (eq (car theme) this-theme)
(widget-value-set (cdr theme) nil)
(widget-apply (cdr theme) :notify (cdr theme) event))))
(when (load-theme this-theme)
(widget-toggle-action widget event)))
;; Mark `custom-enabled-themes' as "set for current session".
(put 'custom-enabled-themes 'customized-value
(list (custom-quote custom-enabled-themes)))))
(defun custom-describe-theme ()
"Describe the Custom theme on the current line."
(interactive)
(let ((widget (widget-at (line-beginning-position))))
(and widget
(describe-theme (widget-get widget :theme-name)))))
(defun custom-theme-save (&rest _ignore)
(interactive)
(customize-save-variable 'custom-enabled-themes custom-enabled-themes)
(message "Custom themes saved for future sessions."))
(defun custom-theme-selections-toggle (widget &optional event)
(when (widget-value widget)
;; Deactivate multiple-selections.
(if (< 1 (length (delq nil (mapcar (lambda (x) (widget-value (cdr x)))
custom--listed-themes))))
(error "More than one theme is currently selected")))
(widget-toggle-action widget event)
(setq custom-theme-allow-multiple-selections (widget-value widget)))
(provide 'cus-theme)
;;; cus-theme.el ends here
Reference in New Issue View Git Blame Copy Permalink